**TLE了

#include <bits/stdc++.h>
#define LL long long
using namespace std;

LL m, n;

bool check(LL x){
	string s = to_string(x);
	bool a = (s.size() == m);
	LL sum=0;
	for (LL i=0;i<s.size();i++){
		sum+=s[i]-'0';
	}
	bool b = (sum==n);
	
	return a&&b;
} 

int main(){ 
	cin >> m >> n;

	LL small = LONG_LONG_MAX;
	LL big = -1; 
    
	for (LL i=0;i<=10000000000;i++){
		if (check(i)){ 
			small = min(small, i); 
			big = max(big, i);
		}
	}
	
	if (small == LONG_LONG_MAX) cout << -1;
	else cout << small;
	
	cout << " ";
	
	cout << big;
	
	return 0;
}